Most modern homes are filled with dozens of electronic devices and gadgets. As a result, the chances of radio frequency interference are much higher than ever. Even a small and simple device like a wireless bulb dimmer can interfere with larger radio transmissions. If your home or workplace is plagued by interference, here is a brief guide on how to find a solution:
The first step in fixing radio frequency interference is to understand what causes it in the first place. Interference is easy to spot. You will hear it as buzzing or pulsing noises from speakers connected to electronic devices. You may also notice it as distorted pictures on screens or spots on radars.
Interference is caused when unwanted or wayward electromagnetic frequencies are picked up by your gadgets. Thus, the undesired signals interfere with the desired ones. Radio signal interference is categorized into three types: noise, overload, and spurious emissions.
To fix interference, you need to locate its source first. Understanding the different types of interference can help you in this regard. The easiest to understand is noise interference, which results in things like defective gadgets. Noise interference can be caused by faulty wiring or warning signals coming because of dangerous wiring arcs. Check the grid first to identify the sources of noise interference.
The second type of interference is overload, where a strong signal nearby overwhelms the equipment you are using. Most modern equipment like TVs and stereos can in-built filters to prevent this type of problem. You are most likely to encounter overload interference on older devices. You can use testing equipment like RF power amplifiers to check for overload interference.
The third type of interference is called spurious emissions. This occurs because someone near you is deliberately transmitting weak signals possibly to cause interference. Regulatory authorities in Australia have clear rules against spurious emissions.
Once you understand the type of interference, isolate the source so you can go on to apply a solution.
You don’t need to proceed directly to expensive fixes. First, try the easy solutions and see if they work. Start by checking the wiring of your system. Damage can cause noise interference as explained above. Look specifically for issues like loose terminals.
If you live in a household with multiple gadgets, try unplugging other devices. Add or remove other electronic gadgets to see if it eliminates the interference problem. Sometimes, changing the orientation or the location of the antennae can also help.
Two of the most frequently used self-help solutions to interference is using a filter or a shield. Shielding the antenna using a metal cover can prevent undesired signals from entering the system. You can also install a filter for devices that lack an inbuilt filter to keep wayward signals out.
If the problem is complex and none of the easy solutions work, you may need to call in a professional. A local electrician may be able to help you with fixing serious interference problems. You can also seek help from marine electricians, who are experts can preventing interference on vessels. It’s always best to seek expert help with complicated interference problems to get the best results.